Dear Sir,
We have two fram 6FA units (6111FA). Usually we used to run both machines on base load operation (averagely both will reach 71MW). But recently we have been instructed to maintain on 65MW with preselect mode. we observed the IGV is varying during the preselect load operation from 80deg to 86deg angle at the time CSRGV also varying. We don't have any alarm for the IGV variations. however it is following the reference but we would like to know why the CSRGV hunting on preselect mode? we tried to read back the logics but could not get the correct reasons.
please help us.
We have two fram 6FA units (6111FA). Usually we used to run both machines on base load operation (averagely both will reach 71MW). But recently we have been instructed to maintain on 65MW with preselect mode. we observed the IGV is varying during the preselect load operation from 80deg to 86deg angle at the time CSRGV also varying. We don't have any alarm for the IGV variations. however it is following the reference but we would like to know why the CSRGV hunting on preselect mode? we tried to read back the logics but could not get the correct reasons.
please help us.